Abstract
The BBGKY hierarchy is analyzed to construct a theory of viscosity in liquids. The approach is an elaboration of a previous theory of self-diffusion. The results reduce to Chapman-Enskog theory at low density and represent a generalization of Enskog theory at high density. The whole analysis is carried out within the framework of Navier-Stokes hydrodynamics; quadratic and cubic contributions to the nonequilibrium correlation functions do not affect the coefficient of viscosity.